using System;

using Newtonsoft.Json;

using AutoFixture;

public class Program

{

    public static void Main()

    {

        var fixture = new Fixture();

        var autoGeneratedTimeSpan = fixture.Create<TimeSpan>();

        string json = JsonConvert.SerializeObject(autoGeneratedTimeSpan, Formatting.Indented);

        Console.WriteLine(json);

        TimeSpan time = JsonConvert.DeserializeObject<TimeSpan>("\"00:00:14\"");

        Console.WriteLine(time);

    }

}